I have a client who reported an issue with their Outlook 2016 having problems searching. I verified via OWA that search was working fine for the user. They have Exchange 2016 on-prem.
If we set the registry to search the local machine, works fine. Rebuilt his OST, rebuilt his Outlook profile, rebuild his local search index (Which shouldn't matter.)
I finally found that if we search the entire mailbox or subfolders, the search works fine. If we search only specific folders, this is where it doesn't work. Occasionally it does, very sporadic.
Since the user reported this, other folks in the office started having the same problem. I feel like it's a recent update (Click-to-run) as users reported this after a power outage (Which most likely caused updates to install since they never reboot.) No known issues I can find, no other occurrences online I can find.
Running version 1905 build 11629.20246 CTR of Office 2016 H&B. Error screen shot attached.
Any ideas?
